CN216939139U

CN216939139U - Special welding jig for lithium ion battery resistance welding

Info

Publication number: CN216939139U
Application number: CN202123179940.6U
Authority: CN
Inventors: 吴宏兵; 沈骏; 王海艳; 殷成刚; 刘智勇; 吴卫军
Original assignee: Suzhou Pronoying Precision Technology Co ltd
Current assignee: Suzhou Pronoying Precision Technology Co ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-07-12
Anticipated expiration: 2031-12-17

Abstract

The utility model discloses a special welding fixture for resistance welding of a lithium ion battery, which is technically characterized by comprising a bottom plate, wherein the top of the bottom plate is fixedly connected with a telescopic rod, the top end of the telescopic rod is fixedly connected with a floating seat, the top of the floating seat is in threaded connection with an adjusting rod, the bottom end of the adjusting rod penetrates through the floating seat and is rotatably connected to the top of the floating seat, the top of the floating seat is provided with a nickel sheet placing groove, and a limiting mechanism is arranged inside the floating seat. The utility model discloses a, can finely tune the distance between nickel piece and the connecting piece through adjusting the pole, stop gear's setting can play the limiting displacement to the nickel piece, prevents to appear removing the influence welding at welded in-process nickel piece, and fixture's setting can play spacing effect to battery utmost point group, and can also play the monitoring action to whether slope of battery utmost point group simultaneously to this improves welding efficiency, has solved the not good problem of battery resistance welding effect in the past.

Description

Special welding fixture for lithium ion battery resistance welding

Technical Field

The utility model relates to the technical field of clamps, in particular to a special welding clamp for resistance welding of a lithium ion battery.

Background

At present, lithium ion batteries have the advantages of high specific energy, high cycle times, long storage time and the like, and are widely applied to portable electronic equipment such as mobile phones, digital video cameras and portable computers, and also widely applied to large and medium-sized electric equipment such as electric automobiles, electric bicycles, electric tools and the like.

At present, the reliability of battery, the security is also a technical difficulty and the key in large capacity power battery manufacture process, especially the welding connectivity of battery nickel piece in the preparation welding process, joint strength, all be the performance that influences battery itself, the uniformity of welding position, the fastness is the direct reason of the performance of direct influence battery itself, present large capacity battery is stricter to battery utmost point group nickel piece welded requirement, can generate heat because of the welding is not firm, can cause very big potential safety hazard for the battery, long-time use still can lead to battery performance and cycle life decay, the internal resistance increases, influence the various parameter performance of lithium cell, finally lead to the unable continued use of battery, serious still can cause the security of battery.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the prior art, the utility model aims to provide a welding clamp special for resistance welding of a lithium ion battery, so as to solve the problem of poor welding effect of the conventional battery resistance welding.

In order to solve the above problems, the present invention adopts the following technical solutions.

Lithium ion battery resistance welds special welding jig, comprising a base plate, the top fixedly connected with telescopic link of bottom plate, the top fixedly connected with floating seat of telescopic link, floating seat's top threaded connection has the regulation pole, the bottom of adjusting the pole is run through floating seat and is rotated the top of connecting at floating seat, the nickel piece standing groove has been seted up at floating seat's top, floating seat's inside is provided with stop gear, the top fixedly connected with of bottom plate bears the seat, bear the seat and be located floating seat's right side, bear the top fixedly connected with baffle of seat, bear and be provided with fixture on the seat.

As a further description of the above technical solution: the top end of the adjusting rod is fixedly connected with a flat knob, and anti-skidding lines which are uniformly distributed are arranged on the flat knob.

As a further description of the above technical solution: stop gear includes the mounting groove, the mounting groove is seted up on the interior diapire of nickel piece standing groove, fixed mounting has the electromagnetic plate on the interior diapire of mounting groove, sliding connection has the magnetic plate on the inner wall of mounting groove, the magnetic plate is located the top of electromagnetic plate and is connected with the electromagnetic plate magnetism.

As a further description of the above technical solution: the inner wall of the mounting groove is fixedly connected with a buffer ring, and the buffer ring is positioned at the bottom of the magnetic plate.

As a further description of the above technical solution: fixture includes double-shaft motor, double-shaft motor fixed mounting is in the bottom of holding the seat, two logical grooves have been seted up at the top of holding the seat, threaded connection has two locating plates, two on double-shaft motor's the output shaft the top of locating plate runs through two respectively and leads to the groove and all extend to the top of holding the seat, two the equal fixedly connected with synchronizing bar in left side of locating plate, two the equal fixedly connected with scute in one side that the synchronizing bar is relative, two all install contact pick-up on the scute, two the warning light is all installed to one side that the synchronizing bar carried on the back mutually, the bottom fixed mounting who holds the seat has the singlechip, contact pick-up and warning light all with singlechip signal connection.

As a further description of the above technical solution: the left side of the synchronizing rod is rotatably connected with an auxiliary wheel, and the bottom end of the auxiliary wheel is in contact with the top of the bearing seat.

Compared with the prior art, the utility model has the advantages that:

the distance between the nickel sheet and the connecting piece can be finely adjusted through the adjusting rod, the limiting mechanism can limit the nickel sheet, the nickel sheet is prevented from moving in the welding process to influence welding, the clamping mechanism can limit the battery pole group, and meanwhile, the battery pole group can be monitored whether being inclined, so that the welding efficiency is improved, and the problem of poor welding effect of the conventional battery resistance welding is solved.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1 according to the present invention;

FIG. 3 is a schematic front sectional view of the present invention;

FIG. 4 is an enlarged view of the structure of FIG. 3B according to the present invention;

fig. 5 is a schematic perspective view of a two-shaft motor according to the present invention.

The reference numbers in the figures illustrate:

1. a base plate; 2. a telescopic rod; 3. a floating seat; 4. adjusting a rod; 5. a nickel sheet placing groove; 6. a limiting mechanism; 601. mounting grooves; 602. an electromagnetic plate; 603. a magnetic plate; 7. a bearing seat; 8. a baffle plate; 9. a clamping mechanism; 901. a double-shaft motor; 902. a through groove; 903. positioning a plate; 904. a synchronization rod; 905. a gusset; 906. a contact sensor; 907. a warning light; 908. a single chip microcomputer; 10. a flat knob; 11. a buffer ring; 12. an auxiliary wheel.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention;

referring to fig. 1 to 5, the welding fixture special for resistance welding of lithium ion batteries in the present invention includes a bottom plate 1, a telescopic rod 2 is fixedly connected to the top of the bottom plate 1, a floating seat 3 is fixedly connected to the top end of the telescopic rod 2, a regulating rod 4 is connected to the top of the floating seat 3 through threads, the bottom end of the regulating rod 4 penetrates through the floating seat 3 and is rotatably connected to the top of the floating seat 3, a nickel sheet placing groove 5 is formed in the top of the floating seat 3, a limiting mechanism 6 is arranged inside the floating seat 3, a bearing seat 7 is fixedly connected to the top of the bottom plate 1, the bearing seat 7 is located on the right side of the floating seat 3, a baffle 8 is fixedly connected to the top of the bearing seat 7, and a clamping mechanism 9 is arranged on the bearing seat 7.

In the utility model, when the lithium battery needs to be welded, a user lifts the nickel sheet, the user places the nickel sheet in the nickel sheet placing groove 5, then controls the limiting mechanism 6 to work by electrifying, the magnetic force generated by the limiting mechanism 6 after electrifying generates suction force on the nickel sheet, so that the nickel sheet is limited in the nickel sheet placing groove 5 and cannot move, the user controls the limiting mechanism 6 to lose the magnetic force when the welding is finished, at the moment, the limitation on the nickel sheet by the limiting mechanism 6 is reduced, the user can take out the nickel sheet more laborsavingly, the limiting mechanism 6 can limit the nickel sheet and the nickel sheet, the welding is prevented from being influenced by the movement of the nickel sheet in the welding process, the user lifts the battery pole group, one side connected with the connecting piece faces the floating seat 3, then the user places the battery pole group on the top of the bearing seat 7 so that the left side of the battery pole group is contacted with the baffle 8, the connecting piece is located the top of nickel piece this moment, user of service controls fixture 9 circular telegram work after then, 9 circular telegrams of fixture restrict the battery utmost point group after, simultaneously if the battery utmost point group does not have the deviation and keeps horizontal fixture 9 then can not make a reaction, if its slope fixture 9 of battery utmost point group then can react, thereby user of service can all adjust the battery utmost point group, fixture 9's setting can play spacing effect to the battery utmost point group, and simultaneously can also play the monitoring role to the slope of battery utmost point group, with this improvement welding efficiency, user of service can rotate the height of adjusting pole 4 regulation floating seat 3 after that, make laminate between nickel piece and the connecting piece, afterwards alright in order to weld, the not good problem of resistance welding effect in the past has been solved.

Please refer to fig. 1, in which: the top end of the adjusting rod 4 is fixedly connected with a flat knob 10, and the flat knob 10 is provided with anti-skid lines which are uniformly distributed.

In the utility model, when a user needs to rotate the adjusting rod 4, the flat knob 10 can provide a good acting point for the user, and the anti-slip lines can increase the friction between the hand of the user and the flat knob 10, thereby preventing the user from slipping.

Please refer to fig. 1, 3 and 4, wherein: limiting mechanism 6 includes mounting groove 601, and mounting groove 601 is seted up on the interior diapire of nickel piece standing groove 5, and fixed mounting has electromagnetic plate 602 on the interior diapire of mounting groove 601, and sliding connection has magnetic plate 603 on the inner wall of mounting groove 601, and magnetic plate 603 is located the top of electromagnetic plate 602 and is connected with electromagnetic plate 602 magnetism.

In the utility model, when the lithium battery needs to be welded, a user lifts the nickel sheets, the user places the nickel sheets in the nickel sheet placing groove 5, then the user controls the electromagnetic plate 602 to work by electrifying, the electromagnetic plate 602 generates opposite magnetism to the magnetic plate 603 after being electrified, because the electromagnetic plate 602 is fixed on the inner bottom wall of the mounting groove 601, the magnetic plate 603 starts to move upwards under the influence of a magnetic field, and generates suction force to the nickel sheets along with the gradual reduction of the distance between the magnetic plate 603 and the nickel sheets, so that the nickel sheets are limited in the nickel sheet placing groove 5 and cannot move, when the welding is finished, the user controls the electromagnetic plate 602 to lose magnetism by power failure, at the moment, the limitation of the magnetic plate 603 on the nickel sheets by gravity is reduced, the user can take out the nickel sheets more laborsavingly, the limiting mechanism 6 can limit the nickel sheets and the nickel sheets, the nickel sheet is prevented from moving in the welding process to influence the welding.

Please refer to fig. 3 and 4, wherein: the inner wall of the mounting groove 601 is fixedly connected with a buffer ring 11, and the buffer ring 11 is located at the bottom of the magnetic plate 603.

In the utility model, when the magnetic plate 603 slides downwards under the action of gravity, the magnetic plate can fall to the top of the buffer ring 11, and the arrangement of the buffer ring 11 can prevent the magnetic plate 603 from directly impacting the electromagnetic plate 602 to damage the electromagnetic plate 602.

Please refer to fig. 1, 2, 3 and 5, wherein: fixture 9 includes double-shaft motor 901, double-shaft motor 901 fixed mounting is in the bottom of bearing seat 7, two logical grooves 902 have been seted up at the top of bearing seat 7, threaded connection has two locating plates 903 on double-shaft motor 901's the output shaft, two logical grooves 902 are run through respectively on the top of two locating plates 903 and all extend to the top of bearing seat 7, the equal fixedly connected with synchronizing bar 904 in left side of two locating plates 903, the equal fixedly connected with scute 905 in one side that two synchronizing bar 904 are relative, all install contact sensor 906 on two scute 905, warning light 907 is all installed to one side that two synchronizing bar 904 carried on the back mutually, the bottom fixed mounting who bears seat 7 has singlechip 908, contact sensor 906 and warning light 907 all with singlechip 908 signal connection, wherein the equal fixedly connected with lead screw in both ends of double-shaft motor 901, locating plate 903 threaded connection is on the lead screw.

In the utility model, a user lifts a battery pole group to enable one side connected with a connecting piece to face a floating seat 3, then the user places the battery pole group on the top of a bearing seat 7 to enable the left side of the battery pole group to be in contact with a baffle plate 8, at the moment, the connecting piece is positioned on the top of a nickel sheet, then the user controls a double-shaft motor 901 to be electrified to work, the double-shaft motor 901 drives a positioning plate 903 in threaded connection with the double-shaft motor to move towards the opposite side after being electrified, the positioning plate 903 is finally in contact with the battery pole group along with the continuous movement of the double-shaft motor 901 and limits the battery pole group, a synchronizing rod 904 can drive a corner plate 905 to move along with the movement of the positioning plate 903, the corner plate 905 can also be positioned on the left side of the battery pole group when the positioning plate 903 is in contact with the battery pole group, at the moment, if the battery pole group does not deviate and keeps horizontal, the two contact sensors 906 are contacted, and a warning lamp 907 keeps electrified, if its slope of battery utmost point group then has the unable contact of contact sensor 906 of one side, contact sensor 906 gives singlechip 908 with signal transmission, and singlechip 908 then can control the warning light 907 of corresponding one side to extinguish to the user of service can all adjust battery utmost point group, and fixture 9's setting can play spacing effect to battery utmost point group, and can also play the monitoring action to whether slope of battery utmost point group simultaneously, with this improvement welding efficiency.

Please refer to fig. 1 and 2, wherein: the left side of the synchronization rod 904 is rotatably connected with an auxiliary wheel 12, and the bottom end of the auxiliary wheel 12 is in contact with the top of the bearing seat 7.

In the utility model, when the synchronous rod 904 moves, the auxiliary wheel 12 also moves along with the synchronous rod 904, the auxiliary wheel 12 can play a certain supporting role on the synchronous rod 904, and can reduce the friction between the synchronous rod 904 and the bearing seat 7.

The working principle is as follows: when the lithium battery needs to be welded, a user lifts the nickel sheet, the user places the nickel sheet in the nickel sheet placing groove 5, then the user controls the electromagnetic plate 602 to be electrified, the electromagnetic plate 602 is electrified to generate opposite magnetism to the magnetic plate 603, the electromagnetic plate 602 is fixed on the inner bottom wall of the mounting groove 601, the magnetic plate 603 starts to move upwards under the influence of a magnetic field, the distance between the magnetic plate 603 and the nickel sheet is gradually reduced along with the upward direction of the magnetic plate 603, so that the nickel sheet is limited in the nickel sheet placing groove 5 and cannot move, the user controls the electromagnetic plate 602 to be powered off and lose magnetism after the welding is completed, at the moment, the limitation of the magnetic plate 603 on the nickel sheet due to gravity is reduced, the user can take out the nickel sheet more labor-saving, the limiting mechanism 6 can limit the nickel sheet and the nickel sheet, and prevent the nickel sheet from moving and affecting the welding in the welding process, a user lifts the battery pole group, so that one side connected with the connecting piece faces the floating seat 3, then the user places the battery pole group on the top of the bearing seat 7, so that the left side of the battery pole group is in contact with the baffle plate 8, at the moment, the connecting piece is positioned on the top of the nickel sheet, then the user controls the double-shaft motor 901 to be electrified to work, the double-shaft motor 901 drives the positioning plate 903 in threaded connection with the double-shaft motor to move towards the opposite side after being electrified, the positioning plate 903 is finally in contact with the battery pole group along with the continuous movement of the double-shaft motor 901 and limits the battery pole group, the synchronizing rod 904 also drives the angle plate 905 to move along with the positioning plate 901 when the positioning plate 903 moves, the angle plate 905 is also positioned on the left side of the battery pole group when the positioning plate 903 is in contact with the battery pole group, at the moment, if the battery pole group does not deviate and keeps horizontal, the contact with the two contact sensors 906, the warning lamp 907 keeps electrified, if its slope of battery utmost point group then has the unable contact of contact sensor 906 of one side, contact sensor 906 gives singlechip 908 with signal transmission, singlechip 908 then can control the warning light 907 of corresponding one side and extinguish, thereby the user of service can all adjust battery utmost point group, fixture 9's setting can play spacing effect to battery utmost point group, and can also play the monitoring action to whether slope of battery utmost point group simultaneously, with this improve welding efficiency, then the user of service can rotate the height of adjusting pole 4 regulation floating seat 3, make laminating between nickel piece and the connecting piece, afterwards alright in order to weld, the not good problem of battery resistance welding effect in the past has been solved.

The foregoing is only a preferred embodiment of the present invention; the scope of the utility model is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims

1. Lithium ion battery resistance welds special welding jig, including bottom plate (1), its characterized in that: the top fixedly connected with telescopic link (2) of bottom plate (1), the top fixedly connected with of telescopic link (2) floats seat (3), the top threaded connection of floating seat (3) has regulation pole (4), the bottom of adjusting pole (4) is run through floating seat (3) and is rotated and connect at the top of floating seat (3), nickel piece standing groove (5) have been seted up at the top of floating seat (3), the inside of floating seat (3) is provided with stop gear (6), the top fixedly connected with of bottom plate (1) bears seat (7), bear seat (7) and be located the right side of floating seat (3), bear top fixedly connected with baffle (8) of seat (7), be provided with fixture (9) on bearing seat (7).

2. The welding jig special for lithium ion battery resistance welding according to claim 1, characterized in that: the top end of the adjusting rod (4) is fixedly connected with a flat knob (10), and the flat knob (10) is provided with anti-skid grains which are uniformly distributed.

3. The welding jig special for lithium ion battery resistance welding according to claim 1, characterized in that: stop gear (6) include mounting groove (601), set up on the interior diapire of nickel piece standing groove (5) mounting groove (601), fixed mounting has electromagnetic plate (602) on the interior diapire of mounting groove (601), sliding connection has magnetic plate (603) on the inner wall of mounting groove (601), magnetic plate (603) are located the top of electromagnetic plate (602) and are connected with electromagnetic plate (602) magnetism.

4. The welding jig special for lithium ion battery resistance welding according to claim 3, characterized in that: fixedly connected with buffering ring (11) on the inner wall of mounting groove (601), buffering ring (11) are located the bottom of magnetic plate (603).

5. The special welding jig for resistance welding of lithium ion batteries according to claim 1, characterized in that: the clamping mechanism (9) comprises a double-shaft motor (901), the double-shaft motor (901) is fixedly installed at the bottom of a bearing seat (7), the top of the bearing seat (7) is provided with two through grooves (902), an output shaft of the double-shaft motor (901) is in threaded connection with two positioning plates (903), the top ends of the two positioning plates (903) respectively penetrate through the two through grooves (902) and extend to the top of the bearing seat (7), the left sides of the two positioning plates (903) are both fixedly connected with synchronizing rods (904), one sides of the two synchronizing rods (904) opposite to each other are both fixedly connected with angle plates (905), two angle plate contact sensors (906) are both installed on the two angle plates (905), warning lamps (907) are both installed on one side of the two synchronizing rods (904) opposite to each other, and a single chip microcomputer (908) is fixedly installed at the bottom of the bearing seat (7), the contact sensor (906) and the warning lamp (907) are in signal connection with the single chip microcomputer (908).

6. The welding jig special for lithium ion battery resistance welding according to claim 5, characterized in that: the left side of the synchronizing rod (904) is rotatably connected with an auxiliary wheel (12), and the bottom end of the auxiliary wheel (12) is in contact with the top of the bearing seat (7).